"My brother has presented me with an ultimatum: if we do not send the girl back from where we brought her, he and I must part. Where he sees an empty page, I see King Lear. But he is my brother, so I shall play my part, knowing it shall all end in tears."--Rosalind Lutece, October the 16th, 1909

Once aboard Comstock's airship, use the first skyrail to second level of the "Hangar Deck" and locate the locked door (requires 1 lockpick) labeled "ENGINEERING". The recorder is inside, on a workbench in the rear workshop.

"Our contraption shows us the girl is the flame that shall ignite the world. My brother says we must undo what we have done. But time is more an ocean than a river. Why try to bring in a tide that will only again go out?"--Rosalind Lutece, September the 3rd, 1909

After the events transpire with Comstock, but before Booker accesses the bridge controls, check the ready room (large desk with a chalk board) on the middle level of the catwalk. The recorder inside is on the desk.

"When a soul is born again, what happens to the one left behind in the baptismal water? Is he simply...gone? Or does he exist in some other world, alive, with sin intact?"--Zachary Hale Comstock, June the 21st, 1893

"The Prophet is dying. The metastasis has aged his so quickly. Why does this Comstock decay, while a Comstock in another world remain fit? If genetics are destiny, what accounts for the difference? Perhaps exposure to the contraption? Hm. It merits further study."--Rosalind Lutece, December the 4th, 1907